Multi-channel mold cooling water flow automatic control device

Abstract

The utility model discloses a multi-channel mould cooling water flow automatic control device which comprises a rack, a water tank is arranged in the rack, and a water pump and a precision filter which are connected with the water tank are arranged on one side of the water tank. The utility model has the beneficial effects that the flow of the temperature control medium of the mold is automatically controlled, so that the temperature of the mold is accurately controlled, the medium flow of the mold in different temperature control channels is controlled, the temperatures of different temperature areas of the mold are independently and accurately controlled, and the parameters of the temperature control medium of the mold are monitored in real time; through real-time monitoring of flow / pressure / temperature and other parameters in the mold water passing process, accurate temperature control is achieved, the production period is shortened, the cooling process can be repeatedly controlled, and the consistent product quality is obtained.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure casting, in particular to a multi-channel mould cooling water flow automatic control device. Background Art

[0002] During the die casting process, the temperature control of the die casting mold has a great influence on the filling and solidification process of the molten metal, the service life of the die casting mold and the stability of product quality. It is one of the parameters that must be controlled.

[0003] If the temperature of the die-casting mold is too high, it will cause the mold to crack prematurely, the slider and ejector and other active mechanisms to wear seriously, the casting quality will be unstable and there will be defects such as deformation, pores and bubbles; if the temperature of the die-casting mold is too low, the die-casting will be filled incompletely, shrink severely, cold shut, and poor surface finish;

[0004] Effective control of the die-casting mold temperature is a key parameter condition for improving the die-casting quality. During the casting production process of new energy vehicle die-casting parts, the mold is large in size, complex in structure, and has many internal temperature control medium channels. It requires a simple and convenient way to automatically control the temperature of the mold by automatically controlling the flow of the temperature control medium.

[0005] In the prior art, the principle of mold temperature control (cooling) is to pass cooling water into the mold water channel, and the low-temperature cooling water enters the mold, absorbs the heat of the mold and flows out of the mold, and the purpose of lowering the mold temperature is achieved through circulation. The usual method is to set a manual or electric valve on the cooling water pipeline to control the connection and disconnection of the cooling water by opening or closing the valve;

[0006] The defects of the prior art are: 1. The control switch can only be manually controlled to be turned on and off. The mold is cooled for a long time with a fixed amount of water flowing through it. The mold temperature changes greatly, and the operation is complicated, requiring high manual skills; 2. The cooling water pipeline is only opened or closed by a single valve, and there is no flow control function, and it is impossible to make ideal process adjustments according to changes in mold temperature; 3. The mold water channel is blocked due to impurities or scaling in the cooling water, resulting in poor mold cooling effect, excessive mold temperature, and unstable quality of die-casting parts; and it is not easy to find that the water channel will only be checked when the defective rate is very high, resulting in an increase in defective products and a waste of manpower and material resources; 4. The adjustment of the mold temperature requires repeated manual adjustments and multiple mold tests to stabilize production, which is a great waste. Utility Model Content

[0007] The utility model aims to provide a multi-channel mold cooling water flow automatic control device to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multi-channel mold cooling water flow automatic control device, comprising a frame, a water tank is arranged inside the frame, and a water pump and a precision filter connected to the water tank are arranged on one side of the water tank.

[0009] For further optimization, a plurality of first pipes connected to the water pump are provided on one side of the water tank.

[0010] Further optimized, the other end of the water pump away from the water tank is connected to the mold through a second pipe.

[0011] In a further optimization, a third pipe is provided at the other end of the mold away from the second pipe.

[0012] For further optimization, the other end of the third pipeline away from the mold is connected to the water tank, and a fluid proportional control valve, a temperature sensor and a flow sensor are respectively provided on the third pipeline.

[0013] For further optimization, an electric control box is provided on one side of the frame, and a touch screen is provided on one side of the electric control box.

[0014] For further optimization, the precision filter is provided between the water tank and the third pipe, and a backwashing device is provided inside the precision filter.

[0015] Beneficial Effects

[0016] The multi-channel mold cooling water flow automatic control device provided by the utility model realizes precise control of the mold temperature by automatically controlling the flow of the mold temperature control medium, realizes control of the medium flow in different temperature control channels of the mold, independent and precise control of the temperature in different temperature zones of the mold and real-time monitoring of the parameters of the mold temperature control medium. By real-time monitoring of parameters such as flow / pressure / temperature during the water flow process of the mold, precise temperature control and shortening of the production cycle are achieved, and a repeatable control cooling process is achieved to obtain consistent product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0019] Figure 3 It is a schematic diagram of the working process of the equipment of the utility model. DETAILED DESCRIPTION

[0020] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0021] Example

[0022] like Figure 1-3 As shown, a multi-channel mold cooling water flow automatic control device includes a frame 3, a water tank 4 is arranged inside the frame 3, and a water pump 5 and a precision filter 7 connected to the water tank 4 are arranged on one side of the water tank 4.

[0023] In this embodiment, a plurality of first pipes connected to the water pump 5 are provided on one side of the water tank 4, and the other end of the water pump 5 away from the water tank 4 is connected to the mold through a second pipe.

[0024] The other end of the mold away from the second pipe is provided with a third pipe.

[0025] The other end of the third pipeline away from the mold is connected to the water tank 4, and the third pipeline is respectively provided with a fluid proportional control valve 10, a temperature sensor 8 and a flow sensor 9.

[0026] An electric control box 2 is also provided on one side of the frame 3 , and a touch screen 1 is provided on one side of the electric control box 2 .

[0027] A precision filter 7 is provided between the water tank 4 and the third pipeline, and a backwashing device is provided inside the precision filter 7 .

[0028] When the high-temperature alloy liquid enters the mold, the mold cooling water enters the mold waterway and circulates to take away the heat of the mold;

[0029] The water pump draws out the cooling water from the water tank inside the equipment, pressurizes it to the set pressure, and then enters the mold in groups. The high-temperature water returned from the mold returns to the water tank through the pipeline, fluid proportional control valve, temperature sensor, and flow sensor.

[0030] A flow sensor is set in the water circuit to monitor the flow of water and feed back the detection value to the controller. After calculation and processing, the controller automatically changes the proportional value of the flow proportional valve to regulate the cooling flow;

[0031] The PLC (programmable controller) in the electric control box controls the working process of the equipment, and the parameters are set on the touch screen (human-machine interface);

[0032] The amount of cooling water entering each water channel is intelligently controlled by a proportional flow valve and a PLC (programmable controller), which evenly removes the excess heat generated by the mold in each production cycle, achieving a balanced and stable relative temperature of the mold as a whole.

[0033] The flow sensor detects the flow of cooling water in each channel and sends the monitoring data to the PLC.

[0034] The pressure sensor detects the water channel pressure and sends the signal to the PLC, which processes it and displays it on the touch screen;

[0035] The pressure gauge detects and displays the water circuit pressure and gas circuit pressure respectively;

[0036] The precision filter filters the cooling water entering the water tank; the filter has an automatic backwashing function. At the appropriate time period (controlled by PLC), the filter will flush the filter element in the reverse direction to ensure the cleanliness of the filter;

[0037] The water tank has an automatic water level control function. The water level switch monitors the water level in the water tank. When the water level is lower than the water filling position, the water level switch sends a water filling signal to the PLC. The PLC controls the water filling valve to open and fill the water tank with water. When the high water level is reached, the PLC controls the water filling valve to close and the water filling ends. When there is a water shortage, the PLC will issue an alarm

[0038] With self-diagnosis function, when abnormality occurs during operation, PLC will output alarm and display the cause of the fault. When serious fault occurs, it will be forced to stop operation.

[0039] Mould data is stored and can be directly called.

[0040] Automatic control of the cooling water flow of the die-casting mold is achieved through proportional adjustment and PID control of the mold cooling water volume.

[0041] Adopt pressure / flow / temperature online detection to realize real-time monitoring of die-casting mold cooling status and parameters, and realize intelligent and digital control of die-casting mold temperature.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the utility model content within the protection scope of the utility model.

Claims

1. A multi-channel mold cooling water flow automatic control device, characterized in that: The invention comprises a frame (3), wherein a water tank (4) is arranged inside the frame (3), a water pump (5) and a precision filter (7) connected thereto are arranged on one side of the water tank (4), a plurality of first pipes connected to the water pump (5) are arranged on one side of the water tank (4), the other end of the water pump (5) away from the water tank (4) is connected to the mold via a second pipe, the other end of the mold away from the second pipe is provided with a third pipe, the other end of the third pipe away from the mold is connected to the water tank (4), a fluid proportional control valve (10), a temperature sensor (8) and a flow sensor (9) are arranged on the third pipe respectively, an electric control box (2) is also arranged on one side of the frame (3), a touch screen (1) is arranged on one side of the electric control box (2), the precision filter (7) is arranged between the water tank (4) and the third pipe, and a backwashing device is arranged inside the precision filter (7).

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